Those immortal words by Abraham Lincoln are the start of the full quote:
You can fool all of the people some of the time.
You can fool some of the people all of the time.
But you cannot fool all of the people all of the time.
They are as true today as they were 140 years ago. But the fly in the ointment is that in a democracy (or a Republic), you dont have to fool all of the people all of the time, just some of them all of the time. And the democrats know how to do that!
Last year we had 2 gubernatorial elections. Both won by democrats, and both winners promised "No New Taxes" and both candidates did not even wait for their new seat of power to get warm before breaking the promise. And somehow people are surprised?
I dont know much about New Jersey other than it is one of the highest tax states in the Union. My State is Virginia, and here we have a healthy mix of Democrats and Republicans winning office (although mostly democrats as it still runs back to its post Civil War days when there is nothing else to stir the electorate). And in Virginia, of the last 6 governors, half have made the "no new tax pledge" and broken it. The best was Mark Warner who waited 2 years to break it. The worst was Tim "Ted Matthews" Kaine who took exactly 6 days (Breaking Clinton's record by a couple of months).
And all 3 were democrats. Of the other 3, 2 were Republicans, and 1 was a democrat (who faced a lot tougher budget than Mark Warner, and yet did not raise taxes).
The democrats know that they do not have to fool all of the people any of the time, and they dont try. They know if they fool some of the people all of the time, they can continue to run in and promise fiscal conservatism, and then do just the opposite once elected. And as long as some people play the fool all of the time, they will get away with it.